Taskbar problem remnants showing

How do I get rid of the sliver of remnants at the taskbar, as shown in the attached png? Thanks.

Hm.. I can't see good,but what's that. Try if System File Checker help you.
SFC /SCANNOW Command - System File Checker

SFC showed everything is OK.

gogreen said:

SFC showed everything is OK.

Try running it 3 times. Also can you post better picture. I can't view good there what exaclly is the problem.

I ran sfc three times--all good.

I'll make another png of it when it happens again. Seems to have disappeared--for now. I'll post a larger shot when it happens again. Basically, though, it's a thin line of errant stuff that's stuck on top of the taskbar (bottom of the screen) all the way across. Looks like something left behind from a web page or a file I had been looking at.

Thank you, StalkeR, for sticking with me on this.

No problem. I'll wait for more clear picuture if that happens again(Hope that it will not come again :) )
Also try if you got that,kill explorer.exe from Task Manager and start it again,if you say that something has left from a website.

How's this picture? Yeah, it happened again.

The four arrows show what remains at the top border of the taskbar. I'll try killing explorer.exe and starting it again. Thanks!

Note: Killing and restarting explorer.exe didn't work.